Ski Sporter outdrive trouble
A little help? While hammering my Ski Sporter (ZZ4 Chevy 350 crate engine) out of a turn, I was approaching 5,200 RPM's when something "let loose" and my revs hit about 6 grand. I was able to idle home but attempting to plane out resulted in free revs and a coasting vessel. Upon putting it on the lift, I noticed that the steering helmet fastener on the outdrive (Volve 270) had backed part way out. I don't know if that's significant or merely coincidence. The gear oil looks clear with no sparkly stuff. Any ideas before I start disassembling? Thanks in advance.
1977 Donzi 16 Ski Sporter, white and orange, 350 Chevy ZZ4, Volvo Penta 270 outdrive turning an Ultra 14x26LH, top speed (June '08): 59 MPH (GPS).